KR102537154B1 - A modular rebar coupler - Google Patents

Abstract

In the present invention, an inlet into which a reinforcing bar is inserted is formed on one side, at least one coupler member for fixing the reinforcing bar inserted through the inlet is formed in a polyhedral shape, and the other side of the coupler member is detachably coupled to each face of the polyhedron Provides a modular reinforcing bar coupler capable of connecting a plurality of reinforcing bars to each other in various directions by selectively coupling the coupler member to a plurality of coupling parts formed on each side of the coupler binding member, including a coupler binding member in which a coupling part is formed .

Description

Modular rebar coupler {A MODULAR REBAR COUPLER}

The present invention relates to a modular reinforcing bar coupler, and more particularly, to a modular reinforcing bar coupler capable of firmly connecting a plurality of reinforcing bars to each other in various directions.

In general, reinforcing bars are a main material for reinforcing strength during construction of concrete buildings, etc., and projections such as nodes and ribs are formed on an outer circumferential surface in an axial direction to increase adhesion strength with concrete.

These reinforcing bars are manufactured in a bar shape, and in various construction sites, the reinforcing bars are connected to each other and used according to the height or length of the concrete structure.

Conventionally, in order to connect reinforcing bars to each other, the contacting parts of the reinforcing bars are tied with wire or gas welding in a double overlapped state. There were problems such as the center of the center not being vertical and crooked, or the connected part being easily broken.

In addition, when welding is also performed, there is a problem in that uniform quality cannot be provided because the work is cumbersome and the strength of the reinforcing bar connection portion may vary depending on the skill level of the operator.

Accordingly, in recent years, various types of reinforcing bar couplers capable of mechanically connecting reinforcing bars have been produced and commercialized.

However, the conventional rebar coupler has a disadvantage in that its use is limited because it is configured in a structure for interconnecting the ends of a pair of rebars.

That is, in the case of connecting the ends of a plurality of reinforcing bars in various directions, welding had to be performed because the reinforcing bar coupler could not be applied, and as described above, there is a problem that uniform quality cannot be provided

In addition, the conventional reinforcing bar coupler was designed only for the purpose of strength against the tensile stress of the reinforcing bar, and no consideration was made for rotational force or torsional stress, so that the reinforcing bar rotates in the coupler when twisting of the reinforcing bar occurs, fixing the reinforcing bar in the coupler. There is a problem of loss of capacity, and accordingly, there is a disadvantage in responding to various types of disasters.

Patent Publication No. 2015-0096554 (Publication date: 2015.08.25) "Coupler for threaded rebar connection"

In the present invention, the modular rebar coupler, specifically, depending on the purpose of use at the construction site, can be used by selectively firmly connecting a plurality of rebars in various directions, and when connecting and fixing the rebars, the tension acting from the rebars It is intended to provide a modular rebar coupler that can effectively respond not only to stress and compressive stress but also torsional stress.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

In order to solve the above problems, the present invention has an inlet into which reinforcing bars are inserted on one side, at least one coupler member for fixing the reinforcing bars inserted through the inlet, and formed in the form of a polyhedron, on each side of the polyhedron Including a coupler binding member in which a coupling portion to which the other side of the coupler member is detachably coupled is formed, the coupler member is selectively coupled to a plurality of coupling portions formed on each surface of the coupler coupling member, so that a plurality of reinforcing bars are mutually connected in various directions. Provides a modular rebar coupler that can be connected.

In addition, the coupler binding member is a modular reinforcing bar coupler configured to connect two to six reinforcing bars to each other through a coupler member formed in the shape of a hexahedron, coupling parts formed on each surface of the hexahedron, and selectively coupled to the coupling unit. provides

In addition, the coupling portion of the coupler fastening member is formed in the form of a screw hole, and the other side of the coupler member provides a modular reinforcing bar coupler having a connector portion screwed into the screw hole.

In addition, the coupling portion of the coupler fastening member is formed in the form of a screw hole, and provides a modular reinforcing bar coupler in which a screw thread coupled to the screw hole is formed on the outer circumferential surface of the other side of the coupler member.

In addition, the coupler member is in the form of a pipe through which the inside is penetrated, and an inlet into which reinforcing bars are inserted is formed on one side, and a coupler housing in which a fixture contact surface inclined toward the inlet is formed on an inner through passage, and a radially formed inside of the coupler housing. Arranged to provide a modular reinforcing bar coupler including a plurality of fixing pieces for fixing the reinforcing bars inserted through the inlet and an elastic member provided inside the coupler housing to press the plurality of fixing pieces toward the inlet.

In addition, the coupler member is provided on the outer surface of the fixing piece, and when the reinforcing bar is fixed through the fixing piece, it further includes a fastening member that penetrates the contact surface of the fixing piece and is forcibly fastened, and the fastening member has high hardness adhered to the outer surface of the fixing piece. Provided is a modular reinforcing bar coupler including a sawtooth-shaped fastening protrusion formed on the outer surface of the powder or fixing piece.

The modular reinforcing bar coupler according to an embodiment of the present invention can selectively and firmly connect a plurality of reinforcing bars in various directions according to the purpose of use at the construction site, thereby improving work efficiency and dramatically improving construction convenience. there is.

In addition, when connecting and fixing reinforcing bars through a modular reinforcing bar coupler, it is possible to guarantee the strength of the connection and effectively respond to torsional stress as well as tensile stress and compressive stress acting from the reinforcing bars. There is an effect that can respond to.

The effects obtainable in the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description below. will be.

1 is a separate illustration of the overall configuration of a modular rebar coupler according to a first embodiment of the present invention.
Figure 2 is a cross-sectional view showing the internal structure of the modular rebar coupler according to the first embodiment of the present invention.
3 and 4 show various use states of the modular rebar coupler according to the first embodiment of the present invention.
Figure 5 shows various examples of fixing pieces provided in the modular rebar coupler according to the first embodiment of the present invention.
6 and 7 show a process of connecting a plurality of reinforcing bars using the modular reinforcing bar coupler according to the first embodiment of the present invention.
Figure 8 shows the overall configuration of the modular reinforcing bar coupler according to the second embodiment of the present invention in isolation.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

The detailed description set forth below in conjunction with the accompanying drawings is intended to describe exemplary embodiments of the present invention and is not intended to represent the only embodiments in which the present invention may be practiced.

In order to clearly describe the present invention in the drawings, parts irrelevant to the description may be omitted, and the same reference numerals may be used for the same or similar components throughout the specification.

In one embodiment of the present invention, expressions such as “or”, “at least one”, etc. may indicate one of the words listed together, or a combination of two or more.

1 shows the overall configuration of the modular rebar coupler 10 according to the first embodiment of the present invention in isolation, and FIG. 2 shows the interior of the modular rebar coupler 10 according to the first embodiment of the present invention. The structure is shown in cross section.

1 and 2, the modular reinforcing bar coupler 10 according to the first embodiment of the present invention may include a coupler member 100 and a coupler binding member 200.

The coupler member 100 has an inlet 111 into which the reinforcing bar R is inserted at one side, and the reinforcing bar R inserted through the inlet 111 can be fixed through the fixing piece 120.

Specifically, the coupler member 100 of this embodiment includes a coupler housing 110 in the form of a pipe, a plurality of fixing pieces 120 provided to fix the reinforcing bar R to the inside of the coupler housing 110, and a plurality of The elastic member 130 that presses the plurality of fixing pieces 120 to tighten the reinforcing bars 120 through the fixing piece 120 of the connector unit for coupling the coupler housing 110 to the coupler binding member 200 ( 140) may be included.

Here, the coupler housing 110 is formed in the form of a pipe through which the inside is penetrated, the reinforcing bar R can be inserted through the inlet 111 formed at the front end, and a plurality of fixings for fixing the reinforcing bar R therein. An elastic member 130 for elastically supporting the piece 120 and the plurality of fixing pieces 120 may be accommodated.

In addition, a fixing piece contact surface 112 inclined toward the inlet 111 is formed on the through passage inside the inlet 111 of the coupler housing 110, and the connector unit 140 is screwed to the rear end.

At this time, the fixing piece contact surface 112 formed on the inner surface of the passage of the coupler housing 110 has a smooth surface and may be formed at the same inclination angle as the inclination angle of the outer surface of the fixing piece 120.

In addition, a plurality of fixing pieces 120 may be disposed radially inside the coupler housing 110 to fix the reinforcing bar R inserted through the inlet 111 of the coupler housing 110.

As an example, in the present embodiment, three round fixing pieces 120 each having an arc-shaped cross section are arranged in a circle to form a set, and each fixing piece 120 has a fixing piece contact surface 112 It may be installed on the inner passage of the formed coupler housing 110.

In addition, a plurality of locking protrusions 121 for fixing the reinforcing bar R may be formed on the inner surface of the fixing piece 120, and the plurality of protrusions 121 have saw-toothed protrusions relative to the entry direction of the reinforcing bar. By being formed in the vertical direction, it is possible to prevent the reinforcing bars (R) from departing in the reverse direction when fixing the reinforcing bars (R).

In addition, the elastic member 130 may be provided inside the coupler housing 110 to press the plurality of fixing pieces 120 toward the inlet 111 of the coupler housing 110 .

The elastic member 130 may be made of a spring, and one side of the spring is supported by the fixing piece 120 in the passage of the coupler housing 110, and the other side is coupled to the rear end of the coupler housing 110. By being supported by the 140, it is possible to press the fixing piece 120 toward the inlet 111 of the coupler housing 110.

That is, by simultaneously pressing the three fixing pieces 120 through springs, the reinforcing bars R inserted into the three fixing pieces 120 through the inlet 111 of the coupler housing 110 can be tightened. .

In addition, the connector unit 140 is formed in a cylindrical shape and a screw thread is formed around the outer circumferential surface, so that one side of the connector unit 140 may be coupled to the rear end of the coupler housing 110 through the screw thread.

In addition, the other side of the connector unit 140 may be coupled to the coupler binding member 200 to be described later through a screw thread, whereby the coupler housing 110, the fixing piece 120, the elastic member 130 and the connector unit ( The coupler member 100 including 140) may be coupled to the coupler binding member 200.

Meanwhile, the coupler fastening member 200 is formed in a polyhedral shape, and coupling portions 210 to which the coupler member 100 is detachably coupled through the connector unit 140 may be formed on each surface of the polyhedron.

Specifically, in this embodiment, the coupler fastening member 200 may be formed in the shape of a hexahedron, and coupling parts 210 in the form of screw holes may be formed on each surface of the hexahedron.

That is, the coupling portion 210 of this embodiment is a hole formed with a female thread, and may be formed in a form in which a male thread formed in the connector portion 140 of the coupler member 100 is screwed correspondingly.

Accordingly, the coupler member 100 can be selectively coupled to the plurality of coupling parts 210 formed on each surface of the coupler fastening member 200, so that a plurality of reinforcing bars R can be connected to each other in various directions.

3 and 4 show various use states of the modular rebar coupler 10 according to the first embodiment of the present invention.

3 and 4, it is possible to selectively couple the coupler member 100 to the coupling part 210 formed on each side of the coupler fastening member 200, as in this embodiment, the coupler fastening member 200 ) When formed as a hexahedron, two to six reinforcing bars (R) can be connected to each other through the coupler member 100 selectively coupled to the six coupling parts 210 of the coupler binding member 200 according to the purpose of use. there is.

As an example, as shown in (a) of FIG. 3, when two reinforcing bars (R) are interconnected in the longitudinal direction using the modular reinforcing bar coupler 10 of this embodiment, the coupler binding member 200 A pair of coupler members 100 are coupled to the coupling part 210 formed on both sides of the coupler member 100, and each reinforcing bar R is inserted and fixed to connect the two reinforcing bars R to each other. there is.

In addition, as shown in (b) of FIG. 3, when four reinforcing bars (R) are interconnected in the up, down, left and right directions, each of the coupling parts 210 formed on the top, bottom, left and right sides of the coupler binding member 200 The coupler member 100 is coupled, and the reinforcing bars R are inserted and fixed to each of the four coupler members 100 coupled to the coupler binding member 200 in this way to interconnect the four reinforcing bars R in the four directions of up, down, left, and right. can

In addition, as shown in Figure 4, in the case of interconnecting six reinforcing bars (R), the coupler member 100 in the coupler member 210 formed on the front and rear and up, down, left and right six surfaces of the coupler binding member 200, respectively. And by inserting and fixing the reinforcing bars (R) to each of the six coupler members 100 coupled to the coupler binding member 200 in this way, the six reinforcing bars (R) can be interconnected in four directions in front and rear and up and down and left and right.

In addition, in addition to the above examples, depending on the purpose of use at the construction site, two reinforcing bars (R) can be connected in the "a" or "b" direction using the modular reinforcing bar coupler 10 of this embodiment. And, of course, it is possible to selectively connect and use 3 to 5 reinforcing bars (R) in various ways.

In this way, the modular reinforcing bar coupler 10 according to the present embodiment can selectively firmly connect a plurality of reinforcing bars (R) to each other in various directions, unlike the existing reinforcing bar coupler that can be used by connecting reinforcing bars in only one direction. It has the advantage of improving the convenience of installation.

On the other hand, Figure 5 shows various examples of the fixing piece 120 provided in the modular rebar coupler 10 according to the first embodiment of the present invention.

Referring to (a) and (b) of FIG. 5 , the fixing piece 120 may further include a fastening member 150 forcibly fastened to the fixing piece contact surface 112 in the coupler housing 110 on an outer surface thereof. .

As an example, as shown in (a) of FIG. 5, high-hardness powder made of coarse particles is attached to the outer surface of the fixing piece 120 by an adhesive, and the irregular fastening surface to the outside of the fixing piece 120. A fastening member 150 forming a may be provided.

In addition, as another example, as shown in (b) of FIG. 5, on the outer surface of the fixing piece 120, a sawtooth-shaped fastening protrusion extending horizontally from the front end to the rear end of the fixing piece 120 in the longitudinal direction. A fastening member 150 formed at regular intervals along the outer circumference of the fixing piece 120 may be provided.

The fixing piece 120 on which such a fastening member 150 is formed is, when pressed by the elastic member 130 in a state in which the reinforcing bar R inserted into the inlet 111 of the coupler housing 110 is fixed, the outer surface The fastening member 150 provided in the coupler housing 110 will be fixed so as not to rotate within the coupler housing 110 by digging into the fixing piece contact surface 112 and forcibly fastening while being pressed to the fixing piece contact surface 112 inside the coupler housing 110. Accordingly, the fixing piece 120 can effectively respond to torsional stress in a state in which the reinforcing bar (R) is fixed.

In addition, referring to (c) of FIG. 5, as an example, the plurality of protrusions 121 formed on the inner surface of the fixing piece 120 include a plurality of protrusions 121a formed in the horizontal direction and , It may include a plurality of vertical protrusions (121b) formed in the vertical direction.

When fixing the reinforcing bar R inserted into the fixing piece 120 through the plurality of horizontal and vertical protrusions 121b formed as described above, the twist of the reinforcing bar R through the plurality of horizontal protrusions 121a ( or rotation) can be prevented, and through the plurality of vertical protrusions 121b, it is possible to prevent the reinforcing bars R from departing in the reverse direction, so that the tensile stress, compressive stress and torsional stress acting from the reinforcing bars R can respond effectively.

Meanwhile, hereinafter, a process of connecting a plurality of reinforcing bars (R) using the modular reinforcing bar coupler 10 according to the first embodiment of the present invention will be described in detail.

6 and 7 show a process of connecting a plurality of reinforcing bars (R) using the modular reinforcing bar coupler 10 according to the first embodiment of the present invention.

6 and 7, first, the coupler member 100 may be coupled to the coupling portion 210 in the form of a screw hole formed on each side of the coupler coupling member 200, the coupler according to the purpose of use in the field. Two to six coupler members 100 may be selectively coupled to the binding member 200 .

As an example, if you want to connect four reinforcing bars (R) to each other, each coupler member 100 is coupled to the coupling portion 210 formed on the four surfaces of the coupler binding member 200, each coupler member 100 ) By inserting and fixing the reinforcing bars (R), four reinforcing bars (R) can be interconnected.

At this time, in fixing the reinforcing bar R through the coupler member 100, as shown in FIG. 6, when the reinforcing bar R is inserted through the inlet 111 of the coupler housing 110, the reinforcing bar to be inserted ( As R) presses the ends of the plurality of fixing pieces 120, the elastic member 130 elastically supporting the plurality of fixing pieces 120 can be compressed by the pressure of the fixing pieces 120, and this process In , the plurality of fixing pieces 120 are spaced apart from the fixing piece contact surface 112 and mutually spread, so that the reinforcing bars R can be inserted into the plurality of fixing pieces 120 that are spread.

Subsequently, as shown in FIG. 7, when the reinforcing bar R is inserted into the plurality of fixing pieces 120, the elastic member 130 elastically supporting the plurality of fixing pieces 120 fixes the plurality of fixing pieces by restoring force. By pressing the pieces 120 toward the inlet 111, the plurality of fixing pieces 120, which had been spread apart, are curled together along the inclined fixing piece contact surface 112, and the plurality of fixing pieces 120 formed inside the plurality of fixing pieces 120. The locking protrusion 121 of the reinforcing bar (R) strongly compresses the outer surface of the reinforcing bar (R) can be tightened.

In addition, while the fastening member 150 provided on the outer surface of each fixing piece 120 is pressed to the fixing piece contact surface 112 inside the coupler housing 110, it penetrates into the fixing piece contact surface 112 and is forcibly fastened, The plurality of fixing pieces 120 and the reinforcing bars R fixed by the fixing pieces 120 may be fixed so as not to rotate within the coupler housing 110, and accordingly, the fixing pieces 120 may hold the reinforcing bars R It can effectively respond to torsional stress in a fixed state.

Figure 8 shows the overall configuration of the modular rebar coupler 10 'according to the second embodiment of the present invention in isolation.

8, the modular reinforcing bar coupler 10' according to the second embodiment of the present invention, compared to the modular reinforcing bar coupler 10 of the first embodiment described above, coupler member 100 without a connector portion It can be coupled to the coupling portion 210 of the coupler binding member 200.

Specifically, in this embodiment, a screw thread 113 is formed on the outer circumferential surface of the rear end of the coupler housing 110, and the screw hole 210a of the coupling portion 210 formed in the coupler fastening member 200 is inserted into the coupler housing 110. By coupling the screw thread 113 formed on the outer circumferential surface of the coupler housing 110 to the screw hole 210a of the coupler fastening member 200 by forming correspondingly with the screw thread 113, the coupler member 100 without a connector unit is coupled to the coupler. It can be coupled to the coupling part 210 of the binding member 200.

At this time, the elastic member 130 provided inside the coupler member 100 may be supported on the bottom surface inside the screw hole 210a of the coupler fastening member 200 to elastically support the fixing piece 120.

On the other hand, as another example of the present invention, the coupler member coupled to the coupler binding member may be configured to be able to adjust the length so as to respond to construction errors.

As an example, as in the first embodiment described above, a coupler member including a coupler housing, a plurality of fixing pieces, an elastic member, and a connector part is coupled to the coupling part of the coupler fastening member, but the connector protrudes from the rear end of the connector housing. By selectively inserting a washer member into the portion and coupling the connector portion to the coupling portion of the coupler coupling member, the length of the coupler member coupled to the coupler coupling member can be adjusted.

As described above, the modular reinforcing bar couplers 10 and 10 'according to an embodiment of the present invention can selectively firmly connect a plurality of reinforcing bars R to each other in various directions, depending on the purpose of use at the construction site. As a result, work efficiency can be improved and construction convenience can be drastically improved.

In addition, when connecting and fixing the reinforcing bars (R) through the modular reinforcing bar couplers (10, 10'), it is possible to ensure the fastening strength, as well as tensile stress and compressive stress acting from the reinforcing bars (R) Since it can effectively respond to torsional stress, it has the effect of responding to various types of disasters.

Embodiments of the present invention disclosed in this specification and drawings are only presented as specific examples to easily explain the technical content of the present invention and help understanding of the present invention, and are not intended to limit the scope of the present invention.

Therefore, the scope of the present invention should be construed as including all changes or modifications derived based on the technical idea of the present invention in addition to the embodiments disclosed herein.

10,10 ': modular rebar coupler 110: coupler housing
120: fixing piece 130: elastic member
140: connector part 150: fastening member
200: coupler binding member 210: coupling part

Claims (6)

At least one coupler member having an entrance into which reinforcing bars are inserted at one side and fixing the reinforcing bars inserted through the inlet;
a connector provided on the other side of the coupler member and having a screw thread formed on an outer circumferential surface;
Coupler fastening members formed in a hexahedron shape and formed on each surface of the hexahedron with a through-screw hole-shaped coupling portion to which the connector unit is detachably screwed; and
It is coupled to the screw thread of the connector portion and includes a washer member for adjusting the degree of protrusion of the coupler member coupled to the coupler fastening member,
Protrusion of the coupler member from the coupler binding member in response to a construction error of the reinforcing bar by changing the depth at which the thread of the connector portion is screwed into the screw hole penetrating the hexahedron through the washer member coupled to the connector portion You can adjust the level
Two to six coupler members are selectively attached to the coupler binding member according to the purpose of use in the field by selectively coupling the connector part provided to the coupler member to the coupling part formed on each surface of the coupler binding member formed of the hexahedron. Modular rebar couplers that can be combined to connect rebars to each other in multiple directions.
delete delete delete According to claim 1,
The coupler member,
A coupler housing in the form of a pipe through which the inside is penetrated, on one side of which an inlet into which reinforcing bars are inserted is formed, and a fixing piece contact surface inclined toward the inlet is formed on an inner through passage;
a plurality of fixing pieces disposed radially inside the coupler housing and fixing the reinforcing bar inserted through the inlet; and
A modular reinforcing bar coupler including an elastic member provided inside the coupler housing to press the plurality of fixing pieces toward the inlet.
According to claim 5,
The coupler member,
Further comprising a fastening member provided on an outer surface of the fixing piece and forcibly fastened by digging into the contact surface of the fixing piece when fixing the reinforcing bar through the fixing piece,
The fastening member is a modular reinforcing bar coupler comprising a high-hardness powder adhered to the outer surface of the fixing piece or a sawtooth-shaped fastening protrusion formed on the outer surface of the fixing piece.

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